Novel single-phase cylindrical transverse flux switched reluctance linear motor

Abstract

The invention discloses a novel single-phase cylindrical transverse flux switched reluctance linear motor, and belongs to the field of novel motor design. The motor is composed of stator ferromagneticrings, stator spacing rings, stator windings, rotor tooth rings and a rotor shaft. The stator ferromagnetic rings and the stator spacing rings are arranged in an alternate way in turn. The winding directions of the two adjacent stator windings in the circumferential direction are opposite. All the windings are connected in series and a magnetic field of NSNSNS poles is formed by the motor. Thereare 2n teeth in the circumferential direction, wherein n is the number of pole pairs and the two adjacent teeth are staggered for the angle of 360 / 2n degrees in turn. According to the motor, the problem of eddy current loss because of the fact that the flux path is parallel to the axial direction of the motor of the conventional longitudinal flux switched reluctance linear motor and the problem ofoptimal average electromagnetic force of the present cylindrical transverse switched reluctance motor under different number of stator poles can be solved. The flux of the motor is transverse flux sothat the eddy current loss is low; meanwhile, the motor has the advantages of large average output, simple structure and high reliability so as to have important engineering value and wide application prospect.

Description

technical field [0001] The invention relates to the field of novel motor design, in particular to a switched reluctance linear motor. Background technique [0002] Linear motors have been increasingly used in magnetic levitation systems, direct drive systems, military and other fields. Among them, the switched reluctance linear motor has attracted more and more attention due to its inherent advantages such as simple structure, firmness, durability, no permanent magnet material, and concentrated winding of the stator. The inherent structure of the traditional unilateral switched reluctance linear motor causes a large normal force to generate a large friction force between the mover and the track, shortening the service life of the motor. Bilateral switched reluctance linear motors can alleviate this problem by virtue of their symmetrical stator structure, but as long as there are irregular bilateral air gaps caused by manufacturing and assembly processes, the normal force ca...

AI Technical Summary

Problems solved by technology

In the traditional longitudinal flux cylindrical switched reluctance linear motor, because part of the magnetic flux direction is parallel to the motor shaft, the eddy current loss of the motor is increased. In addition, due to the large magnetic flux leakage in the stator mover slot, the electromagnetic output of the motor is less saturated. Faster, reducing the output volume ratio of the motor

However, the existing transverse flux cylindrical switched reluctance linear motor lacks the optimization of the relationship between different number of poles and the average output, which may lead to a low ratio of motor output to volume

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